Fabrication and comprehensive analysis of expanded perlite impregnated with myristic acid-based phase change materials as composite materials for building thermal management. (25th November 2022)

• Record Type: Journal Article
• Authors: Fan, Zhixuan; Zhao, Yunchao; Ding, Yufei; Shi, Yu; Liu, Xuying; Jiang, Dahua
• Is Part Of: Journal of energy storage. Volume 55:Part C(2022)
• Publication Date: 2022-11-25
• Subjects: Composite phase change material -- Myristic acid -- Expanded perlite -- Building thermal management; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2022.105710
• Languages: English
• ISSNs: 2352-152X

Abstract

Abstract: Different climates have different thermal performance requirements for composite phase change material (CPCM). In this work, two low thermal conductivity CPCMs for tropical climate characteristics, myristic-lauric acid/expanded perlite (M-L/EP) and myristic acid-paraffin wax /expanded perlite (M-P/EP), were fabricated using lauric acid (LA), myristic acid (MA), paraffin wax (PW), and expanded perlite (EP) as raw materials. Of these, the myristic-lauric acid eutectic (M-L) synthesized from MA and LA and myristic acid- paraffin wax eutectic (M-P) synthesized from MA and PW were used as phase change materials (PCMs), and EP was used as the support material. The adsorption effect of EP on M-L and M-P was evaluated by leakage experiments. The maximum mass fraction of M-L is 75 %, while the maximum mass fraction of M-P is 65 %. At this point, the latent heats of M-L/EP and M-P/EP are 115.63 J·g −1 and 106.84 J·g −1, respectively. Additionally, both M-L/EP and M-P/EP have good thermal stability and reliability, but M-P/EP performs better in terms of economy. Highlights: M-L/EP and M-P/EP were fabricated based on EP as support material, as well as M-L and M-P eutectic mixture as PCMs. Both M-L and M-P are compatible with EP, and there is a simple weak physical interaction. Both M-L/EP and M-P/EP have higher latent heat and energy storage efficiency(μ) M-P/EP has better reliability and lower cost than M-L/EP.